Build Your Own SLA/SLS

Hello All, i build Top Down DLP 3D Printer, i face a problem in Z-Axis accuracy. The error is around 0.5 mm i'm using ball screw in Z-axis, Resin is SPOTA. what's the cause of this problem? what's the solution? anyone faced or read about similar problem before?? Thanks Hint: the good dimensions meas...

this my last print

anyone can help to identify this problem ?

Hi Folks,

i got this failure at my last print as shown in photo.

Resin is LV SpotA

Printing condition:
layer thickness = 0.1
curing time = 8s
bottom =18s
blank = 5s
Z lift = 1
speed = 100

Model: sphere 3x3x3 cm

Hey james, i don't remember too

i'm using MS Resin, the previous photo attached below.
how ever i solved this problem for this part while it takes place with another parts geometry.
the parameter i changed is blank time and Z Lift speed.

Hello Guys, what do you think the criteria of successful Kickstarter Campaigns (what are the common in the most successful 3D Printers) ? why is the most of SLA 3D Printers are Bottom-Up Not Top-down ? do you Think Top-down is promising for Kickstarter Backers? who is Customer of SLA 3D Printer?what...

Hello Guys, Thanks for your recommendations , its all about intensity of light and exposure time. the problem is solved totally when i used low penetration resin. Now i have another Problem Look for the following photo , tell me what are the probable causes of this error. https://scontent-lhr3-1.xx....

Hello guys, i built my own 3D Printer using Top Down technique and i got some problems with Prints. The Printed Part as same as the design plus some excess cured resin with it like attached photos. propeller.jpg propeller 2.jpg i can't solve this Problem, i need your help to solve the problem. Top d...